This is just a quick post to hopefully help resolve an issue that seems pretty relevant on the PoE HAT for the Raspberry Pi.
Special thanks to one of our community members Michael for helping find the solution on this one!
Since the most recent version of Raspbian has become available (2021-01-11), it appears that the fan on the PoE HAT ceases to work properly if you perform an update and upgrade from the Pi’s terminal which upgrades the kernel to 5.10.x and all firmware.
This can be fixed one of two ways:
- Roll back the update by getting any one of the previous RPi firmware commits from the Github Repository (the hard way)
- Simply perform another update as this problem has now been fixed by the Pi Foundation! (a much easier way)
Hope this helps!